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Finding the Fourth Proportional to 733.75, 1,012.46 and 418.97

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Solution

The fourth proportional to 733.75, 1,012.46 and 418.97 is: 578.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.75 : 1,012.46 = 418.97 : x
  2. Step 2: Convert to fraction form
    733.75/1,012.46 = 418.97/x
  3. Step 3: Cross multiply
    733.75x = 1,012.46 × 418.97
  4. Step 4: Simplify right side
    733.75x = 424,190.80
  5. Step 5: Solve for x
    x = 424,190.80/733.75
  6. Step 6: Final answer
    x = 578.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.